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SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head pinch roller
rubber belts capstan
2. Demagnetize the playback head with a head demagnetizer.
(Do not bring the head demagnetizer close to the erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage (1.3 V) unless otherwise noted.
Torque Measurement:
Mode Torque meter Meter reading
FWD
18 – 30 g•cm
CQ-102C
(0.25 – 0.41 oz•inch)
FWD 0.7 – 2.0 g•cm
back tension (0.006 – 0.027 oz•inch)
REV
CQ-102RC
18 – 30 g•cm
(0.25 – 0.41 oz•inch)
REV 0.7 – 2.0 g•cm
back tension (0.006 – 0.027 oz•inch)
FF
CQ-201B
more than 35g•cm
REW
(more than 0.49 oz•inch)
Type Signal Used for
WS-48A 3 kHz, 0 dB Tape Speed Adjustment
Tape Speed Adjustment
Procedure:
1. Playback WS-48A (tape center part) in the FWD state and ad-
just RV601 so that the frequency counter reading becomes 3,015
± 10 Hz.
2. Playback WS-48A (tape center) in the REV state.
Check that the frequency counter reading is within 2.5% of the
reading of step 1.
Adjutment Point:
AUDIO BOARD – Side A –
PRECAUTION
1. Specified voltage : 1.3 V (DC)
2. Switch position
a NR switch : OFF
DIR MODE switch : a
TAPE SECTION
Test tape
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